Extended BloomFilters support by implementing CF.INSERT command (#1083)

* Added support for CF.INSERT command

* Override argument position offset value to default one

* Codestyle fixes

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Co-authored-by: Vladyslav Vildanov <vladyslavvildanov@Vladyslav-Vildanov-MacBook-Pro.local>

src/ClientContextInterface.php

@@ -66,6 +66,7 @@ use Predis\Command\CommandInterface;
  * @method $this cfexists(string $key, $item)
  * @method $this cfmexists(string $key, ...$item)
  * @method $this cfinfo(string $key)
+ * @method $this cfinsert(string $key, int $capacity = -1, bool $noCreate = false, string ...$item)
  * @method $this decr($key)
  * @method $this decrby($key, $decrement)
  * @method $this failover(?To $to = null, bool $abort = false, int $timeout = -1)